Uso de cantaxantina e/ou 25-hidroxicolecalciferol em dietas para matrizes de corte

Abstract

The need to improve the reproductive performance of broiler breeders have been contributed to development of new concepts and products in animal nutrition. Carophyll Red® has in your composition canthaxantin. Has been accepted that canthaxantin has high antioxidant capacity.The 25-(OH)D3 (25-hydroxycholecalciferol), an intermediary between the vitamin D3 and the active form of this vitamin D. This is allied with the metabolism and transfer of calcium from the shell to the embryo. HY-D® is a form of vitamin D, his composition. Rovimix® Maxichick is the association of canthaxanthin and 25-(OH)D3. The experiment was conducted with the objective to evaluate the use of canthaxanthin and/or 25- hydroxycholecalciferol (25-(OH)D3) on performance of broiler breeders. Its was used 264 females and 24 males COBB 500® broiler breeders with 25 to 52 weeks of age. The diets were composed basically of vegetable ingredients, based on corn and soybean meal. It was used four treatments: 1 - control diet, 2 - control diet with addition of 25-(OH)D3, 3 - control diet with addition of canthaxanthin (CX), 4 - control diet with a combination of these two active ingredients (25-(OH)D3 + CX). The parameters evaluated were body weight, laying rate, egg weight, specific gravity, weight of albumen, yolk and shell percentage, albumen, yolk and shell, yolk color and oxidation. To evaluate the laying rate were performed six daily collections during the experimental period. Eggs collect a day of week were used for all others analysis. The egg production rates were not affected by different treatments (P=0.5151).The egg, yolk and albumen weight s and specific gravity were not affected by treatments (P>0.05). Broiler breeders fed canthaxanthin in diet had highest deposition of carotenoids in the yolk.